Alan still has to hike 14 miles.
Step-by-step explanation:
Let the distance already hiked be x miles and the distance still to be covered be y miles.
We are given the total distance to be hiked = 70 miles.
So, x + y = 70
also, we are given that the distance from start to current position = 4 times the distance from end to current position, so x = 4y
Substituting this in above equation,
4y + y = 70
5y = 70
y = 70/5 = 14 miles
which is the distance still to be hiked and hence the required answer.
